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1. WO2009075476 - APPAREIL POUR ENREGISTRER/REPRODUIRE DES INFORMATIONS HOLOGRAPHIQUES

Numéro de publication WO/2009/075476
Date de publication 18.06.2009
N° de la demande internationale PCT/KR2008/006478
Date du dépôt international 04.11.2008
CIB
G11B 7/0065 2006.01
GPHYSIQUE
11ENREGISTREMENT DE L'INFORMATION
BENREGISTREMENT DE L'INFORMATION BASÉ SUR UN MOUVEMENT RELATIF ENTRE LE SUPPORT D'ENREGISTREMENT ET LE TRANSDUCTEUR
7Enregistrement ou reproduction par des moyens optiques, p.ex. enregistrement utilisant un faisceau thermique de rayonnement optique, reproduction utilisant un faisceau optique à puissance réduite; Supports d'enregistrement correspondants
004Procédés d'enregistrement, de reproduction ou d'effacement; Circuits correspondants pour la lecture, l'écriture ou l'effacement
0065Enregistrement, reproduction ou effacement en utilisant des dessins d'interférence optique, p.ex. des hologrammes
CPC
G11B 2007/0924
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
7Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation ; by modifying optical properties or the physical structure; , reproducing using an optical beam at lower power ; by sensing optical properties; Record carriers therefor;
08Disposition or mounting of heads or light sources relatively to record carriers
09with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
0908for focusing only
0917Focus-error methods other than those covered by G11B7/0909 - G11B7/0916
0924Skewed beams methods (using an angled beam, i.e. a beam which is reflected from the disc at an angle different from 90°)
G11B 7/0065
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
7Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation ; by modifying optical properties or the physical structure; , reproducing using an optical beam at lower power ; by sensing optical properties; Record carriers therefor;
004Recording, reproducing or erasing methods; Read, write or erase circuits therefor
0065Recording, reproducing or erasing by using optical interference patterns, e.g. holograms
G11B 7/083
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
7Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation ; by modifying optical properties or the physical structure; , reproducing using an optical beam at lower power ; by sensing optical properties; Record carriers therefor;
08Disposition or mounting of heads or light sources relatively to record carriers
083relative to record carriers storing information in the form of optical interference patterns, e.g. holograms
G11B 7/1356
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
7Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation ; by modifying optical properties or the physical structure; , reproducing using an optical beam at lower power ; by sensing optical properties; Record carriers therefor;
12Heads, e.g. forming of the optical beam spot or modulation of the optical beam
135Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
1356Double or multiple prisms, i.e. having two or more prisms in cooperation
G11B 7/1365
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
7Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation ; by modifying optical properties or the physical structure; , reproducing using an optical beam at lower power ; by sensing optical properties; Record carriers therefor;
12Heads, e.g. forming of the optical beam spot or modulation of the optical beam
135Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
1365Separate or integrated refractive elements, e.g. wave plates
Déposants
  • SAMSUNG ELECTRONICS CO,. LTD. [KR]/[KR]
Inventeurs
  • JEONG, Taek-Seong
  • BAE, Jae-Cheol
Mandataires
  • Y.P.LEE, MOCK & PARTNERS
Données relatives à la priorité
10-2007-012908412.12.2007KR
Langue de publication anglais (EN)
Langue de dépôt anglais (EN)
États désignés
Titre
(EN) APPARATUS FOR RECORDING/REPRODUCING HOLOGRAPHIC INFORMATION
(FR) APPAREIL POUR ENREGISTRER/REPRODUIRE DES INFORMATIONS HOLOGRAPHIQUES
Abrégé
(EN)
A holographic information recording and/or reproducing apparatus, including a light source to emit light; a polarization forming optical system to form a polarized signal beam and a polarized reference beam from the light emitted from the light source, wherein the polarized signal beam and the polarized reference beam are incident on a holographic information storage medium through an identical surface; a focusing optical system to focus the polarized signal beam and the polarized reference beam onto in the holographic information storage medium so that information is recorded by an interference pattern; and an adjustment optical system to set the focal positions of the polarized signal beam and the polarized reference beam, and to adjust a difference between a path of the polarized signal beam and a path of the polarized reference beam.
(FR)
L'invention porte sur un appareil d'enregistrement et/ou de reproduction d'informations holographiques, comprenant une source de lumière pour émettre de la lumière; un système optique de formation de polarisation pour former un faisceau de signal polarisé et un faisceau de référence polarisé à partir de la lumière émise à partir de la source de lumière, le faisceau de signal polarisé et le faisceau de référence polarisé étant incidents sur un support de stockage d'informations holographiques à travers une surface identique; un système optique de focalisation pour focaliser le faisceau de signal polarisé et le faisceau de référence polarisé sur le support de stockage d'informations holographiques, de telle sorte que des informations sont enregistrées par un motif d'interférence; et un système optique d'ajustement pour régler les positions focales du faisceau de signal polarisé et du faisceau de référence polarisé et pour ajuster une différence entre un trajet du faisceau de signal polarisé et un trajet du faisceau de référence polarisé.
Également publié en tant que
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